Safety Winged Needle Structure

ABSTRACT

A safety winged needle structure includes a protective casing, at least one sliding slot disposed on a sidewall of the protective casing and extended from an end of the protective casing to another end of the protective casing, and sequentially having a first position and a second position, a wing extended separately from both sides of the sliding slot corresponding to the sidewall of the protective casing, and the wing has at least one first positioning portion; an accommodating body, disposed in the protective casing, and having at least one sliding member slidably disposed on the sliding member, and at least one second positioning portion disposed separately on both sides of the accommodating body; and a needle inserted into an end of the accommodating body.

RELATED APPLICATIONS

This application is a continuation-in-part of U.S. patent application Ser. No. 10/673,983, filed on Sep. 30, 2003.

FIELD OF THE INVENTION

The present invention relates to a safety winged needle structure, and more particularly to a safety winged needle structure that can be operated easily and safely without worrying about a sliding needle or an unintentional contact of the point of the needle.

BACKGROUND OF THE INVENTION

In general, a prior art winged needle structure is composed of a needle assembly and a needle cover, wherein the needle assembly includes a plurality of wings extended from a lateral side of the body of the needle assembly and an injection needle inserted into a front end of the needle assembly, and the needle cover is in a cylindrical shape and includes an accommodating hole disposed at the bottom of the needle cover. In the method and structure of protecting an injector of the aforementioned prior art winged needle, it is necessary to remove the needle body from the needle cover and insert the injection needle into a desired injecting position of a patient for an injection, and then reattach the needle cover to the needle body after its use, and thus medical professionals may prick their fingers that hold the needle cover and get infected easily.

To overcome the foregoing shortcoming, a general prior art winged needle usually cancels the design of the needle cover and adopts a winged needle having a safety needle cover instead, wherein a wing is extended horizontally from each lateral side of the winged needle, and an injection needle is inserted into a front end of the winged needle, and the safety needle cover is a hollow cylindrical body, so that the winged needle can be slid in the safety needle cover. If a user wants to use the winged needle, the user needs to push the winged needle to the front end of the safety cover to expose the injection needle, and then fold the wings on both lateral sides of the winged needle, and hold the two wings by a hand for the injection or medical treatment. After the safety winged needle is used, the winged needle is retracted, so that the point of the injection needle enters into the safety needle cover. Medical professionals are required to complete the aforementioned operating procedure by one hand, so as to prevent them from being pricked or infected by the injection needle. However, one of the drawbacks of the foregoing structure resides on that both winged needle and safety needle cover are sliding components, such that when a medical professional inserts the injection needle into a patient's skin by holding the two wings of the injection needle for the patient's medical treatment, the winged needle often slides backward due to the resistance of the needle, and thus causing medical malpractice and negligence easily. Another drawback of the foregoing structure resides on that the safety cover is a cylindrical body, and medical professionals are required to complete the injection for medical treatment by one hand. During the process of pushing or retracting the winged needle, medical professionals use their thumb and middle finger to clamp and hold the safety cover, and use their index finger to push the winged needle. If the clamping is not secured, the whole set of winged needle may fall out or cause potential risks during the process of pushing or retracting the winged needle.

In view of the foregoing shortcomings of the prior art, the inventor of the present invention based on years of experience in the related industry to conduct extensive researches and experiments to overcome the shortcomings of the prior art, and finally developed a safety winged needle structure in accordance with the present invention.

SUMMARY OF THE INVENTION

The present invention is to provide a safety winged needle structure to improve the prior art winged needle that will slide backward due to the resistance and cause inconvenience to users, and also provide an easy-to-grab holding portion to assure that the user's fingers can securely hold the cylindrical body and operate the needle by one hand.

The present invention provides a safety winged needle structure, comprising: a protective casing, at least one sliding slot disposed on a sidewall of the protective casing and extended from an end of the protective casing to another end of the protective casing, and sequentially having a first position and a second position, a wing extended separately from both sides of the sliding slot corresponding to the sidewall of the protective casing, and the wing has at least one first positioning portion; an accommodating body, disposed in the protective casing, and having at least one sliding member slidably disposed on the sliding member, and at least one second positioning portion disposed separately on both sides of the accommodating body; and a needle inserted into an end of the accommodating body.

In the foregoing structure, the two wings are folded onto both sides of the sliding slot when the sliding member is moved along the sliding slot to the second position, so that the two first positioning portions are fixed precisely with two corresponding second positioning portions for positioning the sliding member.

To make it easier for our examiner to understand the objective of the invention, its structure, innovative features, and performance, we use a preferred embodiment together with the attached drawings for the detailed description of the invention.

BRIEF DESCRIPTION OF THE DRAWING

FIG. 1 is an exploded view of a safety winged needle structure in accordance with the present invention;

FIG. 2 is a perspective view of a safety winged needle structure in accordance with the present invention;

FIG. 3 is a perspective view of a safety winged needle structure with its accommodating body being pushed out in accordance with the present invention;

FIG. 4 shows an application of a safety winged needle structure of the present invention;

FIG. 5 shows another application of a safety winged needle structure of the present invention;

FIG. 6 is a perspective view of a safety winged needle structure with its accommodating member being pushed back in accordance with the present invention;

FIG. 7 is a perspective view of a safety winged needle structure in accordance with a first preferred embodiment of the present invention;

FIG. 8 is a perspective view of a safety winged needle structure in accordance with a second preferred embodiment of the present invention;

FIG. 9 is an exploded view of a safety winged needle structure in accordance with a third preferred embodiment of the present invention;

FIG. 10 is a perspective view of a safety winged needle structure in accordance with a third preferred embodiment of the present invention;

FIG. 11 shows a safety winged needle structure after its use in accordance with a third preferred embodiment of the present invention; and

FIG. 12 is an enlarged view of a portion of a safety winged needle structure after its use in accordance with a third preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring to FIGS. 1 to 3, a safety winged needle structure of the invention comprises the following elements:

A protective casing 1 includes at least one sliding slot 11 disposed on a sidewall of the protective casing 1 and extended from an end of the protective casing 1 to another end of the protective casing 1 and sequentially having a first position 6 and a second position 7, a positioning embossed dot 15 disposed separately on both sides of the sliding slot 11 on a corresponding wall of the protective casing 1, a stop portion 16 disposed on the sliding slot 11, and a base assembly portion 5 disposed on an end of the protective casing 1, wherein the sidewall of the base assembly portion 5 includes at least one breach 51 penetrated through the base assembly portion 5 and interconnected with the sliding slot 11, a plurality of slippery resisting lines 52 disposed on at least one lateral surface of the base assembly portion 5, and a wing 12 extended separately from both sides of the sliding slot 11 of the corresponding sidewall of the protective casing 1, and the wing 12 is substantially in a fan-shape and extended in a direction opposite from the protective casing 1 and forming a holding portion 125 on the surface of the wing 12, and the wing 12 has a folded line 124 disposed proximate to a surface of the protective casing 1 and parallel to the protective casing 1.

An accommodating body 2 is disposed in the protective casing 1, and a side of the accommodating body 2 has at least one sliding member 21 slidably disposed at the sliding slot 11, and both sides of the sliding member 21 have at least one second positioning portion, and the sliding member 21 includes a neck portion 22 disposed on a surface of the accommodating body 2 and protruded through the sliding slot 11, and the top of the neck portion 22 has a pushing portion 23.

A needle 3 is connected to an end of the accommodating body 2, and the axis of the needle 3 is biased from the axis of the accommodating body 2, and another end of the accommodating body 2 is coupled to a tube.

The sliding slot 11 has a latch groove 13 and a latch groove 14 concavely disposed along a sidewall of the protective casing 1, and the latch groove 13 is situated at a lateral end of a first position 6 of the sliding slot 11 for accommodating the sliding member 21, and the latch groove 13 has an embossed dot 131. In the method of installing the accommodating body 2, the accommodating body 2 is inserted into a rear end of the protective casing 1, and the elasticity of a breach 51 of the base assembly portion 5 allows the accommodating body 2 to spread open the breach 51 and enter into the sliding slot 11. The wall of the sliding slot 11 has a stop portion 16 for preventing the accommodating body 2 from falling out from the breach 51 of the base assembly portion 5 again. Before the winged needle is used, the accommodating body 2 is accommodated into the corresponding latch groove 13 and positioned by the embossed dot 131. If the winged needle is used, it is necessary to push the pushing portion 23 of the accommodating body 2, so that the accommodating body 2 is separated from the embossed dot 131 of the latch groove 13 to allow the sliding member 21 to enter into the sliding slot 11, and move the sliding member 21 along the sliding slot 11 to the second position 7, and fix the positioning embossed dot 15 on the wall of the protective casing 1, and the needle 3 is exposed from the protective casing 1.

Referring to FIG. 4, a wing 12 is extended separately and laterally from both sides of the sliding slot 11 on the corresponding wall of the protective casing 1, and the wing 12 has at least one first positioning portion; wherein the first positioning portion has a pressing surface 121 disposed at a lateral edge of the wing 12, and the second positioning portion has a contact surface 231 of the corresponding pressing surface 121 and inclined from the rear side to the front side of the sliding member 21, such that when the sliding member 21 is moved along the sliding slot 11 to the second position 7, the two wings 12 are lifted and folded onto both sides of the sliding slot 11, and the two first positioning portions are fixed to the two corresponding second positioning portions to fix the sliding member 21 and prevent the winged needle from sliding backward due to the resistance of the needle and avoid medical malpractice and negligence.

Referring to FIGS. 5 and 6, medical professionals are required to complete the aforementioned injection by one hand for preventing unintentional contacts of the needle 3 or infections to them. Medical professionals usually clamp the base assembly portion 5 by their thumb and middle finger and push the sliding member 21 out from the latch groove 13 by their index finger, and then push the pushing portion 23 to slide the sliding member 21 along the sliding slot 11, so that when the sliding member 21 is moved along the sliding slot 11 to the second position 7, the needle 3 is exposed from the protective casing 1. After the winged needle is used, medical professionals push the sliding member 21 back to its original position by their middle finger, such that the sliding member 21 is moved along the sliding slot 11 to the first position 6. When the sliding member 21 passes through the latch groove 13, the sliding member 21 is stopped by the embossed dot 131, and the sliding member 21 is prevented from entering the latch groove 13, so that medical professionals can push the sliding member 21 all the way to the bottom easily, so as to push the sliding member into the latch groove 14 and hide and store the needle 3 in the protective casing 1. Since the latch groove 14 has a stop member 141, therefore the sliding member 21 is prevented from fall out easily, and a second use of the winged needle is prevented effectively.

Referring to FIG. 7 for a safety winged needle structure in accordance with the present invention, the first positioning portion has an insert opening 122 disposed on a surface of the wing 12, and the second positioning portion forms a protruding tenon 232 of the corresponding insert opening 122 and disposed at the sliding member 21 corresponding to the lateral side of the wing 12, such that the two first positioning portions are fixed to the two corresponding second positioning portions for positioning the sliding member 21, so as to prevent the winged needle 3 from sliding backward due to the resistance of the needle 3.

Referring to FIG. 8 for a safety winged needle structure in accordance with the present invention, the first positioning portion has an embossed dot 123 disposed on a surface of the wing 12, and the second positioning portion forms a notch 233 of the corresponding embossed dot 123 disposed on the sliding member 21 corresponding to a lateral side of the wing 12, such that the two first positioning portions are fixed to the two corresponding second positioning portions for positioning the sliding member 21, so as to prevent the winged needle from sliding backward due to the resistance of the needle 3.

Referring to FIGS. 9, 10 and 11 for a safety winged needle structure that comes with a quick installation in accordance with the present invention, the base assembly portion 5 is in an inverted-U cylindrical shape and engaged with an end of the protective casing 1, such that a tube 4 at an end of the accommodating body 2 can be sheathed into the base assembly portion 5 easily, and the base assembly portion 5 has a sliding section 53 concavely disposed at an end of the corresponding sliding slot 11 and coupled to the sliding slot 11, for allowing the sliding member 21 to be entered slidably along the sliding slot 11, and the sliding member 21 has a protruding latch 24. After the winged needle is used, the sliding member 21 is retracted to the first position 6, and the protruding latch 24 of sliding member 21 is latched securely with the base assembly portion 5 to fix the sliding member 21, so as to prevent the winged needle to be used by others for a second time.

It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed. 

1. A safety winged needle structure, comprising: a protective casing, having at least one sliding slot disposed on a sidewall of the protective casing, and an end of the sliding slot being extended along the protective casing from an end of the protective casing to another end of the protective casing, a first position and a second position disposed sequentially, and a wing extended laterally from both sides of the sliding slot of the corresponding protective casing, and having at least one first positioning portion; an accommodating body, disposed in the protective casing, and having at least one sliding member disposed on a side of the accommodating body and slidably installed into the sliding slot, and at least one second positioning portion disposed on both sides of the sliding member; and a needle, connected to an end of the accommodating body; such that when the sliding member is moved along the sliding slot to the second position, the two wings are lifted and folded to both sides of the sliding slot, and the two first positioning portions are fixed to two corresponding second positioning portions for fixing the sliding member.
 2. The safety winged needle structure as recited in claim 1, wherein the sliding slot includes at least one latch groove concavely disposed on a sidewall of the protective casing for accommodating the sliding member correspondingly.
 3. The safety winged needle structure as recited in claim 2, wherein the latch groove is situated at a side of the first position of the sliding slot.
 4. The safety winged needle structure as recited in claim 2, wherein the latch groove includes at least one embossed dot.
 5. The safety winged needle structure as recited in claim 2, wherein the latch groove includes at least one stop member.
 6. The safety winged needle structure as recited in claim 1, wherein the sliding member includes a neck portion disposed on a surface of the accommodating body and protruded through the sliding slot, and a pushing portion disposed at the top of the neck portion.
 7. The safety winged needle structure as recited in claim 6, wherein the pushing portion includes the second positioning portion disposed separately on both lateral sides of the pushing portion.
 8. The safety winged needle structure as recited in claim 1, wherein the first positioning portion has a pressing surface disposed on a side of the wing, and the second positioning portion has a contact surface inclined from the rear end to the front end of the sliding member to the front end and corresponding to the pressing surface.
 9. The safety winged needle structure as recited in claim 1, wherein the first positioning portion has an insert opening disposed on a surface of the wing, and the second positioning portion has a protruding tenon corresponding to the insert opening and formed at the sliding member corresponding to a lateral side of the wing.
 10. The safety winged needle structure as recited in claim 1, wherein the first positioning portion includes an embossed dot disposed on a surface of the wing, and the second positioning portion has a notch corresponding to the embossed dot and formed at the sliding member corresponding to a lateral side of the wing.
 11. The safety winged needle structure as recited in claim 1, wherein the accommodating body is corresponsive to another end of the needle and coupled to a tube.
 12. The safety winged needle structure as recited in claim 1, wherein the needle is stored and hidden into the protective casing, when the sliding member is moved along the sliding slot to the first position.
 13. The safety winged needle structure as recited in claim 1, wherein the needle is exposed from the protective casing, when the sliding member is moved along the sliding slot to the second position, and the two wings are folded to both sides of the sliding slot, such that the two first positioning portions are fixed with two corresponding second positioning portions for positioning the sliding member.
 14. The safety winged needle structure as recited in claim 1, wherein the protective casing has a base assembly portion disposed at an end of the protective casing and provided for the accommodating body enter into the protective casing from the base assembly portion.
 15. The safety winged needle structure as recited in claim 14, wherein the base assembly portion has at least one breach disposed on a sidewall of the base assembly portion and penetrated through the base assembly portion and interconnected with the sliding slot for allowing the sliding member to slidably enter into the sliding slot along the breach.
 16. The safety winged needle structure as recited in claim 14, further comprising at least one stop portion disposed between a lateral side of the breach and the sliding slot.
 17. The safety winged needle structure as recited in claim 14, further comprising a plurality of slippery resisting lines disposed on at least one lateral surface of the base assembly portion.
 18. The safety winged needle structure as recited in claim 14, wherein the base assembly portion is engaged with an end of the protective casing, and the base assembly portion is in an inverted-U cylindrical shape.
 19. The safety winged needle structure as recited in claim 18, wherein the base assembly portion has a sliding section concavely disposed at an end of the corresponding sliding slot and coupled to the sliding slot for allowing the sliding member to slidably enter along the sliding slot.
 20. The safety winged needle structure as recited in claim 14, wherein the sliding member has a protruding latch latched with the corresponding base assembly portion for fixing the sliding member.
 21. The safety winged needle structure as recited in claim 1, wherein the needle has an axis biased with the axis of the accommodating body.
 22. The safety winged needle structure as recited in claim 1, wherein the protective casing includes at least one positioning embossed dot disposed on a wall of the protective casing and corresponding to both sides of the corresponding sliding slot. 